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A 34-year-old woman presented with a 3-month history of right-sided headaches associated with photophobia and pulsatile tinnitus. Investigations including lumbar puncture revealed elevated opening CSF pressure, increased protein, and presence of monocytosis consistent with an inflammatory/infective process. Brain MRI showed an area of thickened enhancing dura around the venous sinus posteriorly. 67Ga scintigraphy demonstrated focal intracranial uptake in the posterior occipital region, and biopsy confirmed a chronic inflammatory infiltrate with no granulomas.

A 67-year-old woman was referred for a bone scan for evaluation of increasing serum alkaline phosphatase levels. Bone scan revealed no abnormal uptake in the skeleton. However, intense hypervascularity and delayed tracer uptake were incidentally identified in an enlarged right thyroid gland. A thyroid scintigraphy, contrast-enhanced CT of the neck, and sonographic evaluation of the abnormality were subsequently organized to characterize the lesion. An ultrasound-guided fine-needle aspiration revealed a benign follicular pattern (Bethesda II), and histopathology of the right hemithyroidectomy confirmed a dominant nodule within a nodular goiter.

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A 79-year-old man with locally metastatic papillary thyroid cancer to left-sided cervical lymph nodes was referred for radioiodine therapy. He was considered unfit for thyroidectomy due to extensive local involvement and severe interstitial lung disease requiring continuous oxygen. The patient was treated with low doses of radioiodine (approximately 30 mCi) every 6 months with corticosteroid cover for 3 years with good effect. Sequential 131I scanning and serum thyroglobulin levels confirmed virtual complete ablation of the thyroid gland. The patient remained well on thyroid hormone replacement.

A 61-year-old man presented with pneumonia and myocardial infarction on a background of diabetes and end-stage renal failure. Methicillin-resistant Staphylococcus aureus bacteremia was confirmed in the setting of ongoing pyrexia. The patient was referred for a 67Ga study, which revealed Ga-avid active disease in the pericardial effusion. This was localized further on CT/MRI and coronary angiography to a dissecting right coronary artery aneurysm, which was treated with surgical repair and long-term antibiotic treatment.